Rotary cleaner



Sept. 1, 1931. J. MOSCHETTO 1,821,394

ROTARY CLEANER Filed April 22. 1950 1777/7/76 gwucn to;

Josepk' /aschaw,

@513 71/ i elk-tome Patented Sept. 1, 1931 UNITED STATES PATENT OFFICE JOSEPH MOSOHETTO, OF PA'I'ERSON, NEW JERSEY, ABSIG-NOB '10 FRANK MOSOHETTO.

OI PATEBSON, NEW JERSEY aoraar omnma Application filed April 22,

This invention relates to cleansin or polishing devices or the like of the type in which the moving element is rotative on an ax1s substantially perpendicular to the surface being treated and the device is constructed also to deliver water or other fluid to said surface, which may also serve as the power to rotate said element. The principal object is to provide a device of this class, useful especially in cleaning or polishing the surfaces of automobile bodies and the like, which shall operate, without injury to the surface, to thoroughly cleanse the same as an incident of the rotary motion of the brushing or equivalent element, the presence of the liquid, and the peculiar manner in which said element is made to act on said surface. A further object is to make possible the use of water or other liquid in copious quantity and so that it will be confined as much as possible to the actual portion of the surface where the brush is acting.

In the drawings:

Fig. 1 is a plan of the device, partly broken awa and Fig. 2 is a substantially central section with the ropeller shown in side elevation.

1 1s a holder in the form of a circular shell or casing 0 en at the bottom but closed at the top, its ottom portion being enlarged in diameter and forming an inside downwardly facing shoulder 2 and a downwardly projecting flange 3. To the shoulder 2, as by screws 4, is removably secured an apertured wall or spider 5. In a boss 6 of the top wall of the casing and a boss 5a of wall 5 are the bearings (as ball bearings) 7 for the shaft 8 of the propeller 9, whose buckets may be formed by blades 10 arranged tangentially of the hub 11 of the propeller. The shaft and its hearings may be installed as a unit in the body of the casing to be therein retained upon fitting and securing in place the wall or spider 5. The casing has a liquid intake 12 which may be the bore of a handle or stem 13 projecting tangentially therefrom and adapted. as by having a screw-threaded end, to be coupled to a hose or equivalent. The flange 3, in a groove 3a thereof, has a wall forming an annular dam or barrier 14: of

1830. Serial 1T0. 448,248.

flexible sheet material, as soft rubber; it is thus adapted not to mar the surface being treated and to fit itself to curvature in the surface so as to perform as perfectly as possible its intended function of confinin the water and preventing its being too reely scattered or thrown elsewhere.

The brush in the actual example is a cupshaped integral member of rubber or the like comprising a disk-like body 15 and a flexible annular wall or flange 16 which depends from the disk concentrically therewith and is split from its lower edge upwardly, preferably at close intervals and thereby producing flexible dents 17, said flange or wall bein preferably flaring; the liquid delivered rom the casing through the apertured spider or wall 5 is admitted within the space formed by the wall 16 through orifices 18 in its disk portion or body 15. The flexibility and splitting of the wall 16 permit the latter to spread upon the surface being treated, this being assured if the flange is flaring as shown. The diameter of the wall 14 should be such that when this spreading occurs said wall will contact with the surface before the spreading proceeds so far that the dents will extend between said wall and surface. The brush is secured on the shaft or spindle 8, against a shoulder 8a thereon, by a nut 19 and washer 20.

When the device is in use, with liquid admitted thereto by the bore of the handle 13 and the brush bearing with its dentate wall 16 againstthe surface being treated and the brush in rotation (as by the influence of the water upon the propeller) the dentate portion of the wall will spread more or less due to the flexibility of its dents and depending on the amount of pressure applied. Thus. while the brush rotates, the inner surfaces of the dents 17 will bear for more or less of their lengths against said surface, so that while a considerable area is thereby covered they will not mar but will act thoroughly to clean said surface. The brush itself more or less confines the water admitted thereto, so that a copious quantity is always present at the place of application of the brush, but if the dam or barrier 14 is provided it will insure against any undue splashing or throwing about of the water, at least if the pressure applied is suflicient to bring said dam in contact with said surface.

Having thus fully described my invention what I claim is:

1. A device of the class described including a holder and a revoluble element journaled therein and having a dentate flexible annular flange extending around its axis of rotation and adapted to bear against the surface to be treated and form therewith a liquid chamber, said device having passage means for admitting to said chamber liquid from an extraneous source.

2. A device of the class described including a holder and a revoluble element journaled therein and having a flaring dentate flexible annular flange extendin around its axis of rotation and adapted to %ear against the surface to be treated and form therewith a liquid chamber, said device having passage means for admitting to said chamber liquid from an extraneous source.

3. A device of the class described including a holder and a revoluble element journaled therein and havin a thin dentate flexible wall reaching lengt wise of the axis of rotation of said element and adapted to bear at its free edge against the surface to be treated, said device having passage means for admitting to said surface liquid from an extraneous source.

In testimony whereof I aflix my signature.

JOSEPH MOSCHETTO. 

